The summing outputs of a half- or full-adder are designated by which Greek symbo

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Question
The summing outputs of a half- or full-adder are designated by which Greek symbol?
Options
A. omega
B. theta
C. lambda
D. sigma

Correct Answer

sigma

Digital Arithmetic Operations and Circuits problems

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4. Convert each of the decimal numbers to 8-bit two's-complement form and then perform subtraction by taking the two's-complement and adding.
Options
A. 0001 0011
B. 0000 1110
C. 0010 1110
D. 1110 0000

5. Which of the following is correct for full adders?
Options
A. Full adders have the capability of directly adding decimal numbers.
B. Full adders are used to make half adders.
C. Full adders are limited to two inputs since there are only two binary digits.
D. In a parallel full adder, the first stage may be a half adder.

6. What is one disadvantage of the ripple-carry adder?
Options
A. The interconnections are more complex.
B. More stages are required to a full adder.
C. It is slow due to propagation time.
D. All of the above.

10. How is a strobe signal used when serially loading a shift register?
Options
A. to turn the register on and off
B. to control the number of clocks
C. to determine which output Qs are used
D. to determine the FFs that will be used

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